Move all modules into dependencies
Move all modules into dependencies

Heroku runs `npm install --prodcution` so
devDependencies will not be loaded. These modules
are required for the app to run.

alphagov/govuk_elements,alphagov/govuk_elements,gavboulton/govuk_elements,gavboulton/govuk_elements,alphagov/govuk_elements,alphagov/govuk_elements,TFOH/govuk_elements,joelanman/govuk_elements,TFOH/govuk_elements,gavboulton/govuk_elements,joelanman/govuk_elements,gavboulton/govuk_elements